/* A quiet reading layout for the portfolio and its technical cases. */
:root {
  --paper: #ffffff;
  --paper-strong: #f7f7f6;
  --white: #ffffff;
  --ink: #242424;
  --muted: #676767;
  --rule: #dededb;
  --rule-light: #ebebe8;
  --rose: #94535e;
  --rose-dark: #79434c;
  --blue: #79434c;
  --green: #426851;
  --max-width: 1040px;
  color-scheme: light;
  font-family: "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.8;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}
p, h1, h2, h3, h4, dl, dd, figure, ul { margin: 0; }
h1, h2, h3, h4 { font-weight: 650; }
a { color: inherit; text-decoration: none; }
button, .button { font: inherit; }
a, summary { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
:where(a, summary):focus-visible {
  outline: 2px solid var(--rose);
  outline-offset: 5px;
}
::selection { background: #f1e4e7; }
.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 8px 16px;
  background: var(--ink);
  color: white;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header, main, .site-footer {
  width: min(calc(100% - 80px), var(--max-width));
  margin-inline: auto;
}
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  min-height: 84px;
  border-bottom: 1px solid var(--rule-light);
}
.brand { flex-shrink: 0; padding-block: 12px; }
.brand-copy strong { font-size: 17px; font-weight: 650; letter-spacing: -0.025em; }
.top-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.top-nav::-webkit-scrollbar { display: none; }
.top-nav a {
  flex-shrink: 0;
  padding: 18px 0;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}
.top-nav a:hover, .top-nav a.is-active { color: var(--ink); }
.top-nav a.is-active { text-decoration: underline; text-underline-offset: 7px; }

.section-band {
  padding: 68px 0;
  border-bottom: 1px solid var(--rule-light);
  scroll-margin-top: 32px;
}
.hero { padding: 80px 0 68px; }
.hero-layout { display: block; }
.system-summary { max-width: 720px; }
.hero-role { margin-bottom: 10px; color: var(--muted); font-size: 14px; }
.system-summary h1 {
  font-size: clamp(38px, 4vw, 48px);
  line-height: 1.25;
  letter-spacing: -0.04em;
}
.hero-statement {
  margin-top: 22px;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.7;
  letter-spacing: -0.025em;
}
.hero-lead { max-width: 64ch; margin-top: 10px; color: var(--muted); font-size: 15px; }
.desktop-break { display: none; }
.system-actions { display: flex; flex-wrap: wrap; gap: 14px 28px; margin-top: 24px; }
.button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding-block: 5px;
  font-size: 14px;
  font-weight: 550;
}
.button.primary { color: var(--rose-dark); }
.button span { font-size: 16px; }
.button:hover { text-decoration: underline; text-underline-offset: 5px; }

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  gap: 12px;
  margin-bottom: 30px;
}
.project-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 24px;
  margin-bottom: 30px;
}
.section-heading > *, .project-heading > *, .project-overview > * { min-width: 0; }
.section-heading h2, .project-heading h2 {
  font-size: clamp(25px, 2.7vw, 30px);
  line-height: 1.45;
  letter-spacing: -0.035em;
}
.section-heading > p, .project-lead { max-width: 80ch; color: var(--muted); }
.project-lead { margin-top: 10px; }
.eyebrow, .experience-kicker, .erd-kicker {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}
.project-status { display: flex; flex-wrap: wrap; gap: 6px 16px; padding-top: 8px; }
.project-status span { color: var(--muted); font-size: 12px; }
.project-overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
  gap: 40px;
  align-items: start;
}
.project-copy h3 { margin-bottom: 14px; font-size: 18px; letter-spacing: -0.02em; }
.project-copy p { color: var(--muted); font-size: 14px; }
.project-copy p + p { margin-top: 14px; }
.service-preview > a { display: block; }
.service-preview img { display: block; width: 100%; height: auto; border: 1px solid var(--rule-light); }
.service-preview figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; margin-top: 12px; font-size: 13px; }
.service-preview figcaption strong { font-weight: 550; }
.service-preview p { margin-top: 5px; color: var(--muted); font-size: 12px; }
.text-link, .contact-dev-link { color: var(--rose-dark); text-underline-offset: 4px; }
.text-link:hover, .contact-dev-link:hover { text-decoration: underline; }
.system-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 30px;
  padding: 22px 0;
  border-top: 1px solid var(--rule-light);
  border-bottom: 1px solid var(--rule-light);
}
.system-facts > div, .project-facts > div { min-width: 0; }
.system-facts dt, .project-facts dt { color: var(--muted); font-size: 12px; }
.system-facts dd { margin-top: 3px; font-size: 14px; font-weight: 500; }
.system-facts a { color: var(--rose-dark); }
.project-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin: 22px 0; }
.project-facts dd { margin-top: 4px; font-size: 14px; }
.scope-note, .disclosure-note, .erd-disclosure {
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.case-index { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; margin-bottom: 28px; }
.case-index a { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 2px 8px; padding: 14px 0; border-top: 1px solid var(--rule-light); }
.case-index a:hover strong { color: var(--rose-dark); }
.case-index a > span:first-child { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.case-index strong { font-size: 14px; font-weight: 550; }
.case-question { grid-column: 2; color: var(--muted); font-size: 12px; }
.verification-boundary { margin: 28px 0; padding: 16px 20px; background: var(--paper-strong); font-size: 13px; }
.verification-boundary > strong { font-weight: 550; }
.verification-boundary p { margin-top: 5px; color: var(--muted); }
.verification-details { margin-top: 5px; }
summary { cursor: pointer; }
.verification-details > summary { width: fit-content; padding-block: 5px; color: var(--rose-dark); }
.case-study-list { display: grid; gap: 0; }
.case-study { min-width: 0; padding: 32px 0; border-top: 1px solid var(--rule); scroll-margin-top: 32px; }
.case-study-heading { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 12px; }
.case-number { padding-top: 3px; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.case-study-heading p { color: var(--muted); font-size: 12px; }
.case-study-heading h3 { margin-top: 5px; font-size: 21px; line-height: 1.5; letter-spacing: -0.025em; }
.case-study-heading .case-result { margin-top: 6px; color: var(--rose-dark); font-size: 13px; }
.case-brief { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin: 22px 0 0 44px; }
.case-brief > div, .company-case-summary > div { min-width: 0; overflow-wrap: anywhere; }
.case-brief dt, .company-case-summary dt { margin-bottom: 6px; color: var(--muted); font-size: 12px; font-weight: 500; }
.case-brief dd, .company-case-summary dd { font-size: 14px; }
.case-details { margin: 18px 0 0 44px; }
.case-details > summary, .company-case-details > summary, .case-evidence > summary {
  width: fit-content;
  min-height: 40px;
  padding-block: 8px;
  color: var(--rose-dark);
  font-size: 13px;
  font-weight: 500;
}
.case-details > summary:hover, .company-case-details > summary:hover, .case-evidence > summary:hover { text-decoration: underline; text-underline-offset: 4px; }
.case-summary { display: grid; gap: 0; margin-top: 12px; }
.case-summary section { display: grid; grid-template-columns: 144px minmax(0, 1fr); gap: 28px; padding: 20px 0; border-top: 1px solid var(--rule-light); }
.case-summary h4 { font-size: 14px; font-weight: 550; }
.case-summary p { color: var(--muted); font-size: 14px; overflow-wrap: anywhere; }
.data-flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr) 18px) minmax(0, 1fr); align-items: center; gap: 5px; margin: 24px 0; }
.data-node { min-width: 0; padding: 14px 10px; border: 1px solid var(--rule); text-align: center; }
.data-node.accent { border-color: #b9959b; background: #faf6f7; }
.data-node small, .data-node strong { display: block; }
.data-node small { color: var(--muted); font-size: 11px; }
.data-node strong { margin-top: 4px; font-size: 12px; font-weight: 550; overflow-wrap: anywhere; }
.data-arrow { color: #96968f; text-align: center; }
.case-checks { margin-top: 28px; }
.case-checks h4 { margin-bottom: 12px; font-size: 15px; }
.case-checks dl > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 24px; padding: 16px 0; border-top: 1px solid var(--rule-light); }
.case-checks dt, .case-checks dd { font-size: 13px; overflow-wrap: anywhere; }
.case-checks dd { color: var(--muted); }
.evidence-checked { display: block; margin-bottom: 4px; color: var(--green); font-size: 11px; }
.case-limit, .case-extra { margin-top: 18px; color: var(--muted); font-size: 13px; }
.case-limit strong { display: block; margin-bottom: 5px; color: var(--ink); font-weight: 550; }
.case-evidence { margin-top: 18px; }
.case-evidence > p { margin: 12px 0; color: var(--muted); font-size: 14px; overflow-wrap: anywhere; }
.case-screen-evidence { margin: 28px 0 28px 42px; padding-top: 24px; border-top: 1px solid var(--rule-light); }
.case-screen-evidence > h4 { font-size: 15px; font-weight: 550; }
.case-screen-evidence > p { margin-top: 6px; color: var(--muted); font-size: 13px; }
.case-screen-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr); align-items: start; gap: 32px; margin-top: 18px; }
.case-screen-grid > figure { min-width: 0; }
.case-screen-link { display: block; width: 100%; }
.case-screen-link--order { max-width: 403px; }
.case-screen-link--refund { max-width: 280px; }
.case-screen-link img { display: block; width: 100%; height: auto; border: 1px solid var(--rule); }
.case-screen-link > span { display: inline-block; margin-top: 8px; color: var(--rose-dark); font-size: 12px; }
.case-screen-link:hover > span { text-decoration: underline; text-underline-offset: 4px; }
.case-screen-grid figcaption { margin-top: 12px; font-size: 13px; overflow-wrap: anywhere; }
.case-screen-grid figcaption strong, .case-screen-grid figcaption span, .case-screen-grid figcaption small { display: block; }
.case-screen-grid figcaption strong { font-weight: 550; }
.case-screen-grid figcaption span { margin-top: 5px; color: var(--muted); }
.case-screen-grid figcaption small { margin-top: 8px; color: var(--muted); font-size: 11px; }
.implementation-code { padding: 20px; background: var(--paper-strong); font: 12px/1.8 Consolas, monospace; white-space: pre-wrap; overflow-wrap: anywhere; overflow-x: auto; }
.implementation-code code { font: inherit; }
.recent-improvements { padding-top: 40px; border-top: 1px solid var(--rule); scroll-margin-top: 32px; }
.recent-improvements > h3 { font-size: 20px; letter-spacing: -0.025em; }
.recent-intro { margin-top: 10px; color: var(--muted); font-size: 14px; }
.recent-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 40px; margin-top: 28px; }
.recent-grid article { min-width: 0; padding-top: 18px; border-top: 1px solid var(--rule-light); }
.recent-grid h4 { margin-bottom: 10px; font-size: 16px; font-weight: 550; }
.recent-grid p { color: var(--muted); font-size: 14px; }
.recent-grid .recent-result { margin-top: 12px; font-size: 12px; }
.recent-result strong { display: block; margin-bottom: 4px; color: var(--ink); font-weight: 550; }
.recent-verification { margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--rule-light); color: var(--muted); font-size: 12px; }
.recent-verification strong { display: block; margin-bottom: 4px; font-weight: 500; }

.company-case { padding: 28px 0; border-top: 1px solid var(--rule); scroll-margin-top: 32px; }
.company-case h3 { margin: 6px 0 12px; font-size: 22px; line-height: 1.5; letter-spacing: -0.025em; }
.company-case-lead { max-width: 80ch; color: var(--muted); font-size: 14px; }
.company-case-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 24px; }
.company-case-details { margin-top: 18px; }
.company-case-body { display: grid; gap: 28px; padding-top: 16px; }
.company-case-body h4 { margin-bottom: 12px; font-size: 16px; }
.company-case-body p { color: var(--muted); font-size: 14px; }
.company-case-body p + p { margin-top: 10px; }
.mail-interference { padding: 20px; background: var(--paper-strong); }
.mail-interference figcaption strong, .mail-interference figcaption span { display: block; }
.mail-interference figcaption strong { font-size: 14px; font-weight: 550; }
.mail-interference figcaption span { margin-top: 4px; color: var(--muted); font-size: 12px; }
.mail-interference ol { margin: 18px 0 0; padding-left: 20px; }
.mail-interference li { padding: 12px 0; border-top: 1px solid var(--rule); }
.mail-actor { font-size: 12px; font-weight: 550; }
.mail-interference-trigger .mail-actor { color: var(--rose-dark); }
.mail-changes { padding-left: 20px; margin: 0; }
.mail-changes li + li { margin-top: 16px; }
.mail-changes strong { font-size: 14px; font-weight: 550; }
.company-case-outcome { padding-top: 18px; border-top: 1px solid var(--rule-light); }
.company-case-outcome strong { display: block; margin-bottom: 8px; color: var(--ink); font-size: 14px; font-weight: 550; }
.experience-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; margin-top: 40px; scroll-margin-top: 32px; }
.experience-card { min-width: 0; padding: 24px 0; border-top: 1px solid var(--rule); }
.experience-card > header { display: flex; align-items: start; justify-content: space-between; gap: 20px; }
.experience-card h3 { font-size: 18px; line-height: 1.6; letter-spacing: -0.02em; }
.experience-badge { flex-shrink: 0; color: var(--muted); font-size: 12px; }
.experience-summary { margin: 16px 0; color: var(--muted); font-size: 14px; }
.experience-card ul { padding-left: 18px; color: var(--muted); font-size: 13px; }
.experience-proof { margin: 16px 0; font-size: 13px; }
.experience-proof strong { display: block; margin-bottom: 4px; font-weight: 550; }
.tag-list { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 16px; color: var(--muted); font-size: 12px; }
.experience-case-link { display: inline-block; margin-top: 12px; font-size: 13px; }
.company-environment { margin-top: 16px; color: var(--muted); font-size: 12px; }
.previous-experience { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; padding: 24px 0; margin-top: 28px; border-top: 1px solid var(--rule-light); }
.previous-experience h3 { font-size: 17px; }
.previous-experience > p { color: var(--muted); font-size: 13px; }
.implementation-results { display: grid; }
.implementation-results article { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 6px 40px; padding: 22px 0; border-top: 1px solid var(--rule-light); }
.implementation-results h3 { grid-row: span 2; font-size: 16px; }
.implementation-results p { color: var(--muted); font-size: 14px; }
.implementation-results span { color: var(--muted); font-size: 12px; }
.orchestration-panel { margin-top: 24px; padding-top: 28px; border-top: 1px solid var(--rule); }
.orchestration-panel > h3 { font-size: 18px; }
.orchestration-decisions { display: grid; margin-top: 20px; }
.orchestration-decisions article { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 40px; padding: 18px 0; border-top: 1px solid var(--rule-light); }
.orchestration-decisions h3 { font-size: 14px; font-weight: 550; }
.orchestration-decisions p { color: var(--muted); font-size: 14px; }

.architecture-support { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr); gap: 40px; align-items: start; margin-bottom: 40px; }
.architecture-support > * { min-width: 0; }
.architecture-topline { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-bottom: 16px; font-size: 13px; }
.status-pill, .erd-source { color: var(--muted); font-size: 11px; }
.architecture-flow { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; }
.architecture-node { padding: 14px 18px; border: 1px solid var(--rule); }
.architecture-node.core { border-color: #b9959b; }
.architecture-node small, .architecture-node strong, .architecture-node span { display: block; }
.architecture-node small, .architecture-node span { color: var(--muted); font-size: 12px; }
.architecture-node strong { margin-block: 3px; font-size: 15px; font-weight: 550; }
.flow-arrow { color: var(--muted); font-size: 11px; }
.architecture-infra { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 16px; color: var(--muted); font-size: 12px; }
.project-visual figcaption { margin-top: 16px; color: var(--muted); font-size: 12px; }
.project-design-note { padding-top: 24px; border-top: 1px solid var(--rule-light); color: var(--muted); font-size: 14px; }
.project-design-note strong { display: block; margin-bottom: 12px; color: var(--ink); font-size: 14px; font-weight: 550; }
.erd-overview { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.8fr); gap: 40px; margin-bottom: 28px; }
.erd-domain-card, .erd-principles { min-width: 0; padding-top: 24px; border-top: 1px solid var(--rule); }
.erd-card-heading { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.erd-card-heading h3, .erd-principles h3 { font-size: 17px; line-height: 1.6; }
.erd-source { padding-top: 4px; }
.erd-domain-map { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.erd-domain-map > span[aria-hidden="true"] { display: none; }
.erd-domain-map > div { min-width: 0; }
.erd-domain-map small, .erd-domain-map strong, .erd-domain-map span { display: block; }
.erd-domain-map small { color: var(--muted); font-size: 11px; }
.erd-domain-map strong { margin: 4px 0; font-size: 13px; font-weight: 550; }
.erd-domain-map span { color: var(--muted); font-size: 12px; overflow-wrap: anywhere; }
.erd-principles ul { list-style: none; margin-top: 16px; padding: 0; }
.erd-principles li + li { margin-top: 12px; }
.erd-principles strong, .erd-principles span { display: block; font-size: 13px; }
.erd-principles strong { font-weight: 550; }
.erd-principles span { color: var(--muted); }
.erd-diagram-card { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--rule); }
.erd-legend { display: flex; flex-wrap: wrap; align-items: start; gap: 14px; color: var(--muted); font-size: 11px; }
.erd-legend b { margin-right: 3px; font-weight: 550; color: var(--ink); }
.erd-diagram-card .erd-card-heading h3 { font-size: 20px; }
.erd-diagram-card .erd-legend { font-size: 12px; }
.erd-reading-guide { margin: -8px 0 22px; color: var(--muted); font-size: 14px; }
.erd-lanes { display: grid; gap: 0; }
.erd-group { min-width: 0; border-top: 1px solid var(--rule); }
.erd-group:last-child { border-bottom: 1px solid var(--rule); }
.erd-group > summary { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 24px; min-height: 86px; padding: 18px 0; list-style: none; }
.erd-group > summary::-webkit-details-marker { display: none; }
.erd-group-heading { min-width: 0; }
.erd-group-heading strong { display: block; font-size: 17px; font-weight: 600; }
.erd-group-heading > span { display: block; margin-top: 4px; color: var(--muted); font-size: 13px; }
.erd-group-toggle { display: flex; align-items: center; gap: 16px; color: var(--rose-dark); font-size: 13px; white-space: nowrap; }
.erd-group-toggle i { width: 16px; font-style: normal; font-size: 18px; text-align: center; }
.erd-group-toggle i::after { content: "+"; }
.erd-group[open] .erd-group-toggle i::after { content: "−"; }
.erd-close-copy, .erd-group[open] .erd-open-copy { display: none; }
.erd-group[open] .erd-close-copy { display: inline; }
.erd-group > summary:hover .erd-group-heading strong { color: var(--rose-dark); }
.erd-group-body { padding: 4px 0 28px; }
.erd-row { display: grid; grid-template-columns: minmax(0, 1fr) 64px minmax(0, 1fr) 64px minmax(0, 1fr); gap: 8px; align-items: center; }
.erd-row + .erd-row { margin-top: 24px; }
.erd-row--pair { grid-template-columns: minmax(0, 1fr) 64px minmax(0, 1fr); max-width: 740px; }
.erd-entity { min-width: 0; align-self: stretch; padding: 18px; border: 1px solid var(--rule); }
.erd-entity.anchor { background: var(--paper-strong); }
.erd-entity h4 { margin-bottom: 4px; font-size: 16px; line-height: 1.6; font-weight: 600; }
.erd-entity > code { display: block; color: var(--muted); font: 12px/1.8 Consolas, monospace; white-space: nowrap; }
.erd-key { margin-top: 12px; color: var(--muted); font: 12px/1.8 Consolas, monospace; }
.erd-fields { display: grid; gap: 10px; margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--rule-light); }
.erd-fields dt { color: var(--ink); font-size: 13px; font-weight: 500; }
.erd-fields dd { margin-top: 2px; color: var(--muted); font: 12px/1.8 Consolas, monospace; overflow-wrap: anywhere; }
.erd-fields code { font: inherit; }
.erd-entity-note { margin-top: 14px; color: var(--muted); font-size: 13px; }
.erd-relation { display: grid; grid-template-columns: auto minmax(10px, 1fr) auto; gap: 3px; align-items: center; color: var(--muted); font-size: 12px; text-align: center; }
.erd-relation i { border-top: 1px solid #a8a8a0; }
.erd-cross-relations { display: grid; gap: 12px; margin: 22px 0 0; padding: 16px 0 0; border-top: 1px solid var(--rule-light); list-style: none; }
.erd-cross-relations li { min-width: 0; font-size: 13px; }
.erd-cross-relations strong { display: block; margin-bottom: 4px; font-weight: 550; }
.erd-cross-relations span { display: block; color: var(--muted); overflow-wrap: anywhere; }
.erd-cross-relations code { font: 12px/1.8 Consolas, monospace; }
.erd-group-insight { margin-top: 18px; color: var(--muted); font-size: 14px; }
.erd-group-insight strong { display: block; margin-bottom: 5px; color: var(--ink); font-size: 13px; font-weight: 550; }
.erd-model-note { margin-top: 18px; color: var(--muted); font-size: 12px; }
.erd-notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 32px; }
.erd-notes article { min-width: 0; padding-top: 18px; border-top: 1px solid var(--rule-light); }
.erd-notes article > span { color: var(--muted); font-size: 11px; }
.erd-notes h3 { margin: 8px 0; font-size: 14px; font-weight: 550; }
.erd-notes p { color: var(--muted); font-size: 12px; }
.stack-grid, .contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 40px; }
.stack-grid article, .contact-grid article { min-width: 0; padding: 18px 0; border-top: 1px solid var(--rule-light); }
.stack-grid h3, .contact-grid span { display: block; margin-bottom: 6px; color: var(--muted); font-size: 13px; font-weight: 500; }
.stack-grid p, .contact-grid a { font-size: 14px; overflow-wrap: anywhere; }
.stack-grid .stack-context { margin-top: 8px; color: var(--muted); font-size: 12px; }
.stack-grid .text-link { display: inline-block; margin-top: 8px; font-size: 12px; }
.contact-grid a:hover { text-decoration: underline; text-underline-offset: 4px; }
.contact-dev-link { display: inline-block; margin-top: 20px; font-size: 13px; }
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; padding: 24px 0 36px; color: var(--muted); font-size: 11px; }

@media (max-width: 900px) {
  .site-header { flex-wrap: wrap; gap: 0; padding-top: 14px; }
  .top-nav { flex-basis: 100%; gap: 24px; }
  .top-nav a { padding: 12px 0; }
  .project-overview { gap: 28px; }
  .case-brief, .company-case-summary { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .data-flow { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .data-arrow { transform: rotate(90deg); }
  .data-node { padding: 12px; text-align: left; }
  .architecture-support, .erd-overview { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .erd-row, .erd-row--pair { grid-template-columns: minmax(0, 1fr); gap: 10px; max-width: none; }
  .erd-entity { padding: 18px; }
  .erd-relation { grid-template-columns: minmax(0, 1fr); gap: 2px; justify-items: center; }
  .erd-relation i { height: 16px; border-top: 0; border-left: 1px solid #b7b7b0; }
}
@media (max-width: 680px) {
  body { font-size: 14px; }
  .site-header, main, .site-footer { width: calc(100% - 40px); }
  .site-header { padding-top: 8px; }
  .top-nav { flex-wrap: wrap; gap: 0 18px; overflow-x: visible; }
  .top-nav a { padding-block: 8px; font-size: 12px; }
  .hero { padding: 48px 0; }
  .section-band { padding-block: 44px; }
  .system-summary h1 { font-size: 38px; }
  .hero-statement { font-size: 18px; }
  .hero-lead { font-size: 14px; }
  .system-actions { gap: 10px 24px; }
  .button { font-size: 13px; }
  .project-heading { grid-template-columns: minmax(0, 1fr); gap: 12px; margin-bottom: 24px; }
  .project-status { padding: 0; }
  .project-overview, .experience-grid, .previous-experience, .recent-grid, .erd-notes { grid-template-columns: minmax(0, 1fr); }
  .project-overview { gap: 24px; }
  .system-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 24px; }
  .project-facts { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .project-facts > div { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 18px; }
  .project-facts dd { margin-top: 0; }
  .case-index { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .case-question { display: none; }
  .verification-boundary { padding: 14px 16px; }
  .case-study { padding-block: 26px; }
  .case-study-heading { grid-template-columns: 24px minmax(0, 1fr); gap: 8px; }
  .case-study-heading h3, .company-case h3 { font-size: 19px; }
  .case-brief, .case-details { margin-left: 0; }
  .case-screen-evidence { margin-left: 0; }
  .case-screen-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .case-screen-link--refund { max-width: 360px; }
  .case-summary section, .case-checks dl > div { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .recent-grid { gap: 24px; }
  .company-case-summary { gap: 16px; }
  .experience-grid { gap: 8px; }
  .experience-card > header { flex-wrap: wrap; gap: 8px; }
  .previous-experience { gap: 12px; }
  .implementation-results article, .orchestration-decisions article { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .implementation-results h3 { grid-row: auto; }
  .erd-domain-map { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .erd-group > summary { grid-template-columns: minmax(0, 1fr); gap: 8px; padding-block: 16px; }
  .erd-group-toggle { justify-content: space-between; }
  .erd-entity { padding: 16px; }
  .erd-diagram-card .erd-card-heading h3 { font-size: 18px; }
  .stack-grid, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .site-footer { display: block; }
  .site-footer > span { display: block; }
  .site-footer > span + span { margin-top: 6px; }
}
@media print {
  .site-header, .system-actions, .skip-link { display: none; }
  .site-header, main, .site-footer { width: 100%; }
  .section-band { padding-block: 28px; }
  .hero { padding-top: 0; }
  .project-overview { grid-template-columns: minmax(0, 1fr); }
  .service-preview { max-width: 480px; }
  .case-study { break-inside: avoid; }
  .case-details, .case-brief, .case-screen-evidence { margin-left: 0; }
  a { color: inherit; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}